Pixel-by-Pixel Scattering Mechanism Vector Optimization in High-Resolution PolInSAR

In this paper, we propose two methods to optimize scattering mechanism vectors in polarimetric interferometric synthetic aperture radar (InSAR) dealing with high-resolution SAR data. The methods optimize an interferogram by focusing on the pixel-by-pixel variation of the scattering mechanisms. We show the efficacy of the methods using fully polarimetric interferometric radar data obtained from the Advanced Land Observing Satellite-2 PALSAR-2 to generate accurate digital elevation models successfully. Finally, we confirm the importance of considering the polarization in such InSAR systems by comparing parameters optimized in the proposed methods with those calculated from the well-known Pauli coherency matrix.